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36 True/False questions

  1. arrayAn arbitrary scalar value used to access a hash element.

          

  2. Boolean expressionAn expression used to match patterns within a string.

          

  3. array indexA numbered value, enclosed in braces, that tells the Perl interpreter which array element to access.

          

  4. referenceA table of variable names maintained by the Perl interpreter. Organizes code and protects the variables used in one section of a program from being inadvertently overwritten by another section.

          

  5. wildcard characterA special character that represents one or more characters.

          

  6. command line argumentsThe first line in every Perl script. Instructs the operating system about the location of the Perl interpreter.

          

  7. Perl interpreterAn executable program that accepts the Perl script and executes the instructions contained within it.

          

  8. return valueA value that points to another value.

          

  9. packageAn ordered list of scalar values.

          

  10. pragmaAn ordered list of scalar values.

          

  11. inheritanceA relationship between two objects, in which one object "is" another object.

          

  12. algebraic expressionAn expression used to match patterns within a string.

          

  13. escape sequenceA value that points to another value.

          

  14. shellA command line interpreter.

          

  15. metacharacterA special character that represents one or more characters.

          

  16. stackA collection of scalar values that can be accessed individually using a key.

          

  17. queueA specially-designed Perl script that can be reused in scripts other than the one for which it was originally intended.

          

  18. scopeA common data structure that operates under FIFO (first in, first out) rules.

          

  19. Practical Extracting and Reporting Language (Perl)A scripting language that includes some UNIX facilities. It is generally easier to learn and use than other, more structured languages.

          

  20. filehandleAn input/output connection between the program and a particular file or device.

          

  21. standard outThe default output stream provided by the operating system. Text output to this may be directed to a terminal window, a file, a printer, or other output device.

          

  22. shebang lineThe first line in every Perl script. Instructs the operating system about the location of the Perl interpreter.

          

  23. hashA collection of scalar values that can be accessed individually using a key.

          

  24. Structured Query Language (SQL)A value passed from a subroutine to the calling routine.

          

  25. logical operatorAn operator used to bridge two Boolean expressions to create a single expression.

          

  26. objectA command line interpreter.

          

  27. namespaceA package allows users to define a distinct namespace for a block of code.

          

  28. stringA data element representing one or more alphanumeric characters.

          

  29. regular expressionAn expression used to help determine the flow of execution, which evaluates as either true or false.

          

  30. subroutineA named block of code that can be called as needed throughout a program.

          

  31. methodA collection of scalar values that can be accessed individually using a key.

          

  32. moduleA common data structure that operates under LIFO (last in, first out) rules.

          

  33. input/output (I/O) redirectionA mechanism by which the command line can be used to redirect input to, or output from, a script.

          

  34. STDIN (standard in)The default output stream provided by the operating system. Text output to this may be directed to a terminal window, a file, a printer, or other output device.

          

  35. keyA command line interpreter.

          

  36. character classCode which indicates a list of characters that one element in a string will match. A negative value is one in which the element in a string does not match any characters in the list.